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Operation and maintenance of anaerobic reactor during shutdown and production reduction period and method for disposal of excess sludge

An anaerobic reactor and excess sludge technology, applied in biological sludge treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problems of economic loss, large sludge disposal costs, acidification of anaerobic reactors, etc. , to achieve strong promotion and application prospects, enhance overall usability, and improve the effect of COD

Active Publication Date: 2021-06-15
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of modern industry, the demand for equipment such as anaerobic reactors is increasing day by day, but there are still many problems in actual operation, especially during the period when enterprises stop production and reduce production. It will cause acidification of the anaerobic reactor, which affects the normal operation of the enterprise, and will also cause huge economic losses
At the same time, the excess sludge produced by the process matched with the anaerobic reactor occupies a large space, and the cost of sludge disposal is also relatively high, which greatly hinders the promotion and promotion of the anaerobic reactor in the field of sewage treatment. application

Method used

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  • Operation and maintenance of anaerobic reactor during shutdown and production reduction period and method for disposal of excess sludge

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Comparison scheme
Effect test

Embodiment 1

[0019] The operation and maintenance of the anaerobic reactor in this embodiment and the method for the disposal of excess sludge during the period of production shutdown and production reduction are carried out according to the following steps:

[0020] 1. Set the water flow rate to 10m 3 / h of water that meets the "Integrated Wastewater Discharge Standard" is sent to the hydrolytic acidification tank of the anaerobic reactor;

[0021] 2. Stop the operation of all stirring equipment in the hydrolytic acidification tank to ensure that only the force generated by the influent water in the hydrolysis acidification tank;

[0022] 3. Transport the excess sludge to the hydrolytic acidification tank, and keep the hydrolytic acidification tank in a static state or a state where the remaining sludge cannot be taken out;

[0023] 4. The sewage in the hydrolytic acidification tank is hydrolyzed by the anoxic sludge, and then transported to the anaerobic reactor.

Embodiment 2

[0025] The operation and maintenance of the anaerobic reactor in this embodiment and the method for the disposal of excess sludge during the period of production shutdown and production reduction are carried out according to the following steps:

[0026] 1. Set the water flow rate to 30m 3 The COD content per hour is lower than 1000mg / L and sent to the hydrolytic acidification tank of the anaerobic reactor;

[0027] 2. Stop the operation of all stirring equipment in the hydrolytic acidification tank to ensure that only the force generated by the influent water in the hydrolysis acidification tank;

[0028] 3. Transport the excess sludge to the hydrolytic acidification tank, and keep the hydrolytic acidification tank in a static state or a state where the remaining sludge cannot be taken out;

[0029] 4. After the sewage in the hydrolysis acidification tank is hydrolyzed through the sludge, it is then transported to the anaerobic reactor.

Embodiment 3

[0031] The operation and maintenance of the anaerobic reactor in this embodiment and the method for the disposal of excess sludge during the period of production shutdown and production reduction are carried out according to the following steps:

[0032] 1. Set the water flow rate to 50m 3 The COD content per hour is lower than 1000mg / L and sent to the hydrolytic acidification tank of the anaerobic reactor;

[0033] 2. Stop the operation of all stirring equipment in the hydrolytic acidification tank to ensure that only the force generated by the influent water in the hydrolysis acidification tank;

[0034] 3. Transport the excess sludge to the hydrolytic acidification tank, and keep the hydrolytic acidification tank in a static state or a state where the remaining sludge cannot be taken out;

[0035] 4. After the sewage in the hydrolysis acidification tank is hydrolyzed through the sludge, it is then transported to the anaerobic reactor.

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Abstract

The invention relates to a method for the operation and maintenance of an anaerobic reactor and the disposal of excess sludge during the period of production shutdown and production reduction. The method includes the following steps: 1. Transporting sewage to the pretreatment device of the anaerobic reactor; 2. Stopping the The operation of all stirring equipment in the pretreatment device is used to ensure that only the force generated by the influent water in the pretreatment device; 3. Transport excess sludge to the pretreatment device and keep the pretreatment device in a static state Or the state that the remaining sludge cannot be taken out; 4. After the sewage of the pretreatment device is hydrolyzed by the sludge, it is then transported to the anaerobic reactor. The invention hydrolyzes the passing sewage by hydrolyzing the sludge in the acidification tank, and maintains the stable operation of the anaerobic reactor during production shutdown and production reduction as a nutrient source, greatly enhances the overall usability of the anaerobic reactor, and has extremely strong Prospects for promotion and application.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for operation and maintenance of an anaerobic reactor during production shutdown and production reduction period and excess sludge disposal. Background technique [0002] At present, the discharge of waste water will cause more and more serious pollution to the living environment of human beings. Although my country's sewage treatment industry has achieved great development in recent years, there are still problems such as low design standards of sewage treatment plants, backward equipment and process technology, etc. Leading to the phenomenon of "high energy consumption and low efficiency" in the factory. [0003] Anaerobic reactor is an important sewage treatment equipment, which is widely used in many production fields such as dyes, medicines, and plastics. With the rapid development of modern industry, the demand for equipment such as anaerobic reactors is i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F11/04
CPCC02F3/28C02F11/04C02F2203/002C02F2209/08C02F2303/14
Inventor 胡大波赵桂松刘福强姜笔存常邦华李爱民
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND